Key benefits Realtime monitoring during recording enables immediate check of audio quality, and supports hearing aid fuction. Allinone device functioning as a voice recorder, MP3 player, and USB drive for convenient use. Onekey operation to start recording and to save audio, simplifying usage and protecting data. Automatic timestamping with file names by date helps keep recordings organized. Lowbattery detection automatically saves recordings before power off to prevent data loss. Durable onepiece shell with antifall design for reliable daily use. Compact and portable for easy carrying and everyday practicality. Core features Onepiece shell with antifall design for durability. Compact, portable size suitable for pocket or bag carry. Multifunction: voice recorder, MP3 player, and USB drive. Onekey to record and onekey to save audio. Timestamped files named by date automatically. Detects low battery and saves recordings automatically before power off. Realtime monitoring during recording for immediate feedback. Hearing aid fuction support Use scenarios Meetings or lectures: capture full discussions with readytofindbydate files; realtime monitoring helps ensure clear recordings. Field interviews or onsite documentation: compact, durable device that serves as recorder, MP3 player, and USB drive, with easy file management. use and media transfer: use as an MP3 player and USB drive to listen and transfer audio files, while keeping recordings organized automatically.